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Anastaziya [24]
3 years ago
12

What is the answer to this math problem

Mathematics
2 answers:
Nana76 [90]3 years ago
6 0

1\dfrac{7}{10}+3\dfrac{13}{20}

Method 1.

Find LCM of denominators:

LCM(10, 20) = 20

1\dfrac{7\cdot2}{10\cdot2}+3\dfrac{13}{20}=1\dfrac{14}{20}+3\dfrac{13}{20}=(1+3)+\left(\dfrac{14+13}{20}\right)=4\dfrac{27}{20}=4\dfrac{20+7}{20}=5\dfrac{7}{20}

Method 2.

Convert mixed numbers to decimal:

1\dfrac{7}{10}=1.7\\\\3\dfrac{13}{20}=3\dfrac{13\cdot5}{20\cdot5}=3\dfrac{65}{100}=3.65\\\\1\dfrac{7}{10}+3\dfrac{13}{20}=1.7+3.65=5.35

Alenkasestr [34]3 years ago
4 0
Hope this helps you..!!!

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